Table 1.
Comparison of Clinicopathological Characteristics Between Training Set and Test Set
| Characteristics | Training Set (n=560) | Test Set (n=140) | P |
|---|---|---|---|
Age (Year,  ) |
48.96±10.41 | 48.67±9.56 | 0.251a |
| Menstrual status (%) | |||
| Premenopausal | 254(45.4) | 51(36.4) | 0.057b |
| Postmenopausal | 306(54.6) | 89(63.6) | |
| Location of disease (%) | |||
| Left breast | 269(48.0) | 72(51.4) | 0.473b |
| Right breast | 291(52.0) | 68(48.6) | |
| Tumor size [M (Q1, Q3)]mm | 20(15,29) | 22(16,27) | 0.649c |
| HER2 status (%) | |||
| Negative | 415(74.1) | 101(72.1) | 0.637b |
| Positive | 145(25.9) | 39(27.9) | |
| ER status (%) | |||
| <10% | 148(26.4) | 41(29.3) | 0.496b |
| ≥10% | 412(73.6) | 99(70.7) | |
| PR status (%) | |||
| ≤20% | 280(50.0) | 75(53.6) | 0.450b |
| >20% | 280(50.0) | 65(46.4) | |
| Ki-67 (%) | |||
| ≤20% | 216(38.6) | 58(41.4) | 0.536b |
| >20% | 344(61.4) | 82(58.6) |
Notes: aindependent-sample t-test; bchi-square test; cMann-Whitney U-test.